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Pictures: Electric water pump + thermostat replace
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02-01-2013, 11:33 AM | #155 |
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Great DIY guide, helped alot. The only thing I would add, is that if you are just doing the pump, and you are trying to get to that top pump bolt.... Remove the lower coolant hose from the thermostat..( the one with the snap clip fastener ).. Then remove the inner front fender well plastic. Then, using a 12", a 6" and an knuckle you'll be able to get right to that upper water pump screw from the wheel well with no problem. I was stuck for hours trying to figure out how to get to it... Wanted to post my 2 cents to save anyone else alot of time.
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03-30-2013, 09:43 PM | #156 | |
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The problem I had was with the large and small hoses that have the rigid plastic collar. Pain in the ass getting both off. Spent more time on those things than anything else. Getting both back on was a pain too. With the small one, I heard a distinct click and feel pretty assured that it is on there correctly. With the large one, I had to push real hard with a large screwdriver all around it, never heard a click....but visually checked where I can the the grooves on the t-stat lined up with the rigid collar before letting the clip down. Pulled real hard on both the hose and they booth seem to be secure.....or maybe I am just not pulling hard enough. Guess I'll find out tomorrow when I leak check it, but with my luck it probably won't do anything bad till it is nice and heated up on the freeway far from home. |
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03-31-2013, 08:06 AM | #157 | |
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03-31-2013, 11:31 AM | #158 | |
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Also replaced the oil filter housing gasket, oil/coolant temp sensor and the aux fan sensor. The oil/coolant temp sensor was coated with some crap....which may have been related to my fan turning on all the time. All made really easy to do with a fairly decent feeling set of "E" sockets from Harbor freight http://www.harborfreight.com/17-piec...set-67930.html and these torx ratcheting box ends made that gasket job a piece of cake, thanks to mlifxs for bringing it to attention in the oil filter gasket DIY thread. http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1 All you need is the e10 box end, but I got the whole ratcheting set as well as the non-racheting set ....just in case. |
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04-22-2013, 09:06 AM | #159 |
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Water Pump and Tstat replacement
Water Pump finally went yesterday. 330XI with 125K. After reading all the posts here, it looks like I was on the high-end. Standard yellow temp warning, immediately followed by a red temp warning, resulting in Limp mode. There was some coolant splashed around the reservoir tank, but not too much. Added some water, and let it sit for about 5-10 minutes. Started it back up and didn’t even get out of the parking lot before it yelled at me again A big thanks to all the folks who took time to document the process for the rest of us! I will be tackling this procedure myself and saving about $1000 by not taking it to the dealership. I will post back with how it went, but I am lots of confidence that it will be "fairly easy"... again.. thanks to all those who forged the way.
Ordered the parts (WP & Tstat) online for about $547 with 2-day shipping. I will be doing it on ramps, soo... I have been stretching now to get ready to contort myself.
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04-22-2013, 02:40 PM | #160 |
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Mine went out today. Same situation as many others have posted.
-I pulled into Mr. Goodcents subs to get some lunch -Had some lunch -Started the car -Noticed the yellow cooling light come on as I drove away. -Started looking for a friendly place to pull over -The yellow temperature light turned to red -Pulled over right away -Noticed no leaks -Said "FUCK!" and then figured it was the water pump Car is sitting at the shop right now. Hoping my aftermarket warranty picks up the tab.
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04-22-2013, 03:49 PM | #161 |
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What mileage?
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04-24-2013, 06:53 PM | #162 | |
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All done! Took about 5 hours. Wasn't too bad thanks to the DIYs here! If I could impart any wisdom on people who's thermostat or water pump hasn't died yet.... if you have more than 90K on your car, and you plan to keep it past 100K, I would do the WP and TS soon! Make no mistake, don't think that it will last.... it won't. Do it on your terms... not the car's terms. Luckily it broke 10 miles form my house, but it could have been much much worse. I saved about $1200 in labor by doing it myself. It wasn't difficult, and it makes it so much easier when you remove the radiator fan, and the coolant reservoir tank. Also, when installing the new TS and WP, connect them with the "U" hose Before installing them in the car.
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04-25-2013, 11:37 AM | #163 |
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Dealer charged me $1300 for everything that included a radiator flush, WP and a Therm, if parts cost around $550 is what I hear is the average then dealer charged me $500 for labor plus the $200 for flushing the radiator. It would have been fun to do it myself but I wasn't about to waste an entire day to do that and having to mess with it especially in freezing temperatures. Got it done while at the office and delivered to me when done, 2 year warrantee .
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05-08-2013, 02:27 PM | #164 | |
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05-18-2013, 09:37 AM | #165 | |
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Waterpump on my 09 335i went at 86,000
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05-20-2013, 06:55 AM | #166 |
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Just did my pump/tstat yesterday. Thanks for the helpful pics.
Some things that I observed that might help others: When removing the bottom pan, use the corner of one of the the two thin, aluminum cover mounts (that have to be removed anyhow) to unscrew the blue plug from the radiator. The rounded edge of the aluminum plate is a perfect fit in the big blue screw. Don't remove the white nut! I was worried aobut dropping the sway bar, that it might have tension on it. It doesn't just remove the 4 nuts and be prepared to catch it on the last nut. Unbolt the steering hose mount, and it will sit behind the sway bar out of your way. This is the plug on the thermostat. Its a pain to unplug, just like the one on the waterpump. Be very careful with the NEW thermostat because the receptacle for the plug sticks out like a sore thumb. It would be very easy to break it when trying to manuver the thermostat back into place. I used a swivel ratchet to get to some of the difficult hose clamps. To help get the clamps off, I used some trim removal tools from harbor freight. They are good for prying on the hose ends without cutting them with something like a screwdriver. I had a tough time with the thermostat. I couldn't get it out without removing the waterpump. I had to sit it towards the back of the car on the subframe while I worked on the pump. I also could not get the new therm in place with the new pump in place. I had to put them in together (but not bolted together). Also, check your new thermostat for sharp mold/flashing points. Mine had a few spots that would have made getting the hoses on tougher than necessary. Good luck!
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06-01-2013, 04:56 PM | #167 |
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Overhaul complete-tips and a question
Ordered the parts last week to do a cooling system overhaul: pump, thermostat, expansion tank and cap, temp sensor, upper and lower radiator hose, the horseshoe hose between the pump and stat and some replacement hose clamps. Everything was delivered on Thursday.
I have a 2006 325i with 103,000 miles. On the way home from work, I got the yellow temperature warning followed almost immediately by the red and limp mode. I was at mile 22 of 24 on the world's longest bridge, The Causeway. No shoulder. Since I live about 1 mile from the end of the bridge, I limped home. On Friday I picked up a set of Torx and external Torx sockets and began tackling the replacement after work using the DIY here. Here are some key observations: 1. Don't hesitate to remove the expansion tank. It's two bolts and it gives you some space and some play in the hoses. 2. Absolutely remove the radiator fan. 1 Torx screw and you can drop it down and out of the way. This allows MUCH easier access to the pump and stat. Especially the Torx bolt on the back side of the pump. No u-joint needed if you go at it from the front. 3. The hoses with clamps are a bitch to remove. I had to shut down Friday and regroup. The key is to break the seal with a small screwdriver. You should be able to feel this when it happens. 4. Safety glasses are a must. You will get coolant and grime in your face. Hope this helps. And now for my question. When Draining the radiator, I pulled the whole white plug out instead of the middle blue piece. Is it only friction that holds it all in or did I crack off some sort of retaining clips? Should I bite the bullet and replace it now or can I leave it alone? It would require a coolant drain and refill at this point. Also, I was only able to get about 1.8 gallons back into the reservoir and the red stick is way over top. Does this mean that I didn't drain everything? I ran the 12 minute flush twice. |
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06-01-2013, 11:18 PM | #168 |
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@txx3ddq442: Thanks for the tips about the radiator fan. Can you tell me what size the Torx screw you used to take off the fan?
As for the white plug, I saw a Youtube video on changing the water pump on an E90 BMW and they said they had to change theirs after they accidentally removed it. |
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06-02-2013, 01:27 PM | #169 |
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06-19-2013, 08:04 AM | #170 |
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Would a sign of a water pump being bad also be a whistle that is heard at certain speeds that is coincides with engine revs? It is not heard when parked, it's not a wheel bearing nor is it a tensioner or a pulley. Any ideas? Trying to narrow it down. Thanks
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06-19-2013, 09:17 AM | #171 |
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The wpump is electric and has no correlation to engine speed.
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06-19-2013, 10:03 AM | #172 | |
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06-19-2013, 10:48 AM | #173 |
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06-19-2013, 10:53 AM | #174 | |
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And yes it's between 40 and about 55 mph, gets louder when you let go of the accelerator and coast |
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06-19-2013, 01:21 PM | #175 | |
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Also, you said the noise was engine-speed dependent, but then gave a road speed where you hear it most. Break it down - is it tied to road speed or engine speed? If you have an AT use manual mode to isolate. |
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06-19-2013, 02:03 PM | #176 | ||
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